By the way,is there official documentation for online upgrade cassandra from
3.9 to 3.11.2 which I can follow?
Best Regards,
倪项菲/ David Ni
中移德电网络科技有限公司
Virtue Intelligent Network Ltd, co.
Add: 2003,20F No.35 Luojia creative city,Luoyu Road,Wuhan,HuBei
Mob: +86 13797007811|Tel: + 86 27 5024 2516
I used version: 3.11.2
I want to add that both the counts (SSTables, sum of numbers shown in levels),
change after some time and become equal(i.e. the mismatch does not last
forever) which has led me to believe that this mismatch happens only when the
compaction process is going on and once the
Hi,
You can have a look to
https://github.com/apache/cassandra/blob/trunk/NEWS.txt which list every
modification / advice for upgrading between each C* version
On 20 April 2018 at 09:25, Xiangfei Ni wrote:
> By the way,is there official documentation for online upgrade cassandra
> from 3.9 to
The read operation on the list column is done locally on each replica so
replication factor does not really apply here
On Fri, Apr 20, 2018 at 7:37 AM, Jinhua Luo wrote:
> Hi All,
>
> Some list operations, like set by index, needs to read the whole list
> before update.
> So what's the read cons
On Fri, Apr 20, 2018 at 4:08 AM, Aiman Parvaiz wrote:
> Hi all
>
> I have been given a 15 nodes C* 2.2.8 cluster to manage which has a large
> size KS (~800GB).
>
Is this per node or in total?
> Given the size of the KS most of the management tasks like repair take a
> long time to complete an
Hi Nicolas,
Thanks for your reply.
The doc you sent to me only includes what have been upgrade between every
version,but I want the doc of how to do the online upgrade,do you have this
kind of doc?
Best Regards,
倪项菲/ David Ni
中移德电网络科技有限公司
Virtue Intelligent Network Ltd, co.
Add: 2003,20F No.35
Hi,
I believe there is no such official apache documentation, and since
Datastax removed the old guide to redirect to the apache one, you are left
with Google to look for guidance.
As a general advice (from what I can recall) :
- you might want to run nodetool cleanup before upgrading to free so
Thank you very much,Nicolas.
Best Regards,
倪项菲/ David Ni
中移德电网络科技有限公司
Virtue Intelligent Network Ltd, co.
Add: 2003,20F No.35 Luojia creative city,Luoyu Road,Wuhan,HuBei
Mob: +86 13797007811|Tel: + 86 27 5024 2516
发件人: Nicolas Guyomar
发送时间: 2018年4月20日 16:37
收件人: user@cassandra.apache.org
主题: Re
Hi ,
I am using python. Is capturing traffic using wireshark right way to know
this?
Thanks
Ashutosh
On Fri, Apr 20, 2018 at 11:11 AM Rajesh Kishore
wrote:
> If you are using java client , generally to find what is the protocol and
> cipher used , you can configure -Djavax.net.debug=ssl for the
Do you confirm it just reads the local storage? If so, I have a question:
Think that, the user reads the list using QUORUM CL, e.g. the value is
{a,b,c}, then, it wants to set the second item b.
It sends such write request to some coordinator, but that coordinator
has outdated version in its local
Yes that's also the way.
On Fri, 20 Apr 2018, 15:55 Ashutosh Kumar, wrote:
> Hi ,
> I am using python. Is capturing traffic using wireshark right way to know
> this?
> Thanks
> Ashutosh
>
> On Fri, Apr 20, 2018 at 11:11 AM Rajesh Kishore
> wrote:
>
>> If you are using java client , generally to
Running Cassandra produces the following error message:
"SSLv2Hello is not a recognized protocol"
because the JVM being used does not support SSLv2. The JVM does not support
SSLv2 because "it's a HUGE security risk."
How does one configure Cassandra to *not* use SSLv2?
Thanks.
Lou.
We dont have enough time before our major infrastructure upgrade to do the
cassandra upgrade.
is there any insight on the below
if I run the repair with DC option (-dc localdatacenter) for local
datacenters, then all repairs are successfully. Is this indication that the
repairs are good? can we
On 04/20/2018 07:41 AM, Lou DeGenaro wrote:
> Running Cassandra produces the following error message:
>
> "SSLv2Hello is not a recognized protocol"
>
> because the JVM being used does not support SSLv2. The JVM does not
> support SSLv2 because "it's a HUGE security risk."
>
> How does one config
One quick question on reaper ..what data is stored in reaper_db keyspace ?
And how much does it grow?
Do we have to cleanup that frequently or reaper has mechnism to slef clean ?
On Friday, April 13, 2018, Alexander Dejanovski
wrote:
> Hi Abdul,
>
> Reaper has been used in production for several
Could you be more specific? What does one specify exactly to assure SSLv2
is not used for both client-server and server-server communications?
Example yaml statements would be wonderful.
Your patience with the security neophyte is greatly appreciated.
Lou.
On Fri, Apr 20, 2018 at 9:35 AM, Micha
The inconsistency scenario you describe can occur for sure
Now repair (read repair, consistent read + weekly repair) is there to fix it
"Why Cassandra do not read from cluster with somehow read CL before
updating the list?"
Because read-before-write on the cluster level is an anti-pattern.
The
Hello,
I have a 3 node cluster with RF 2 and using STCS. I use SSDs for commitlogs and
HDDs for data. Apache Cassandra version is 3.11.2.
I basically have a huge keyspace ('newts' from opennms) and a big keyspace
('opspanel'). Here's a summary of the 'du' output for one node (which is more
or l
Changing the datadrives to SSD would help to speed up the repairs.
Also don't run 3 node, RF2. That makes Quorum = All.
Regards,
Carlos Juzarte Rolo
Cassandra Consultant / Datastax Certified Architect / Cassandra MVP
Pythian - Love your data
rolo@pythian | Twitter: @cjrolo | Skype: cjr2k3 | Li
Let me clarify my question more:
Given the rf is 3, r/w cl is quorum.
Initially, the list is empty, the user appends one element into the list:
list += [foo]
Then node A is down, and the user prepends another element:
list = [bar] + list
Then A comes back, assuming the list on A is still [foo], an
But it seems that it uses cl to read list from cluster just like I said:
https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/cql3/statements/ModificationStatement.java#L398
2018-04-20 16:12 GMT+08:00 DuyHai Doan :
> The read operation on the list column is done locally on
Hi all,
We have a cluster running on Cassandra 3.7 (we already know this is
considered a "bad" version and plan to upgrade to 3.11 in the
not-too-distant future) and we have a few Nagios checks that run `nodetool
compactionstats` to check how many pending compactions there currently are,
as well a
I was trying to understand the token ranges the nodetool describering
retunrs, i ran it on different keyspaces across clusters of different
sizes, couldn't figure out how the no.of token ranges we calculated ??
If it something like
replication * no.of nodes in DC * num_token
not sure how
Thanks Sam, that's what i was looking for good to know it's in pipeline
Regards
Pranay
On Thu, Apr 19, 2018 at 4:23 AM, Sam Tunnicliffe wrote:
> https://issues.apache.org/jira/browse/CASSANDRA-13985 is probably what
> you're looking for here
>
> Thanks,
> Sam
>
> On 10 April 2018 at 11:55, Rah
On 04/20/2018 08:46 AM, Lou DeGenaro wrote:
> Could you be more specific? What does one specify exactly to assure
> SSLv2 is not used for both client-server and server-server
> communications? Example yaml statements would be wonderful.
The defaults in cassandra.yaml have only TLS specified in
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